Dell Inspiron 7420 Operation and maintenance manual

Latitude 7420
Setup and Specifications
Regulatory Model: P135G/P136G
Regulatory Type: P135G001/P136G001
July 2021
Rev. A01

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid
the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other
trademarks may be trademarks of their respective owners.

Chapter 1: Set up your Latitude 7420............................................................................................ 4
Chapter 2: Views of Latitude 7420.................................................................................................6
Right....................................................................................................................................................................................... 6
Left..........................................................................................................................................................................................6
Top.......................................................................................................................................................................................... 7
Display.................................................................................................................................................................................... 8
Bottom................................................................................................................................................................................... 9
Modes.....................................................................................................................................................................................9
Battery Charge and Status LED ....................................................................................................................................12
Chapter 3: Specifications of Latitude 7420.................................................................................. 13
Dimensions and weight..................................................................................................................................................... 13
Processor............................................................................................................................................................................. 13
Chipset..................................................................................................................................................................................14
Operating system............................................................................................................................................................... 14
Memory.................................................................................................................................................................................14
External ports..................................................................................................................................................................... 15
Internal slots........................................................................................................................................................................15
Wireless module..................................................................................................................................................................16
WWAN module....................................................................................................................................................................16
Audio......................................................................................................................................................................................17
Storage................................................................................................................................................................................. 17
Media-card reader............................................................................................................................................................. 18
Keyboard.............................................................................................................................................................................. 18
Camera................................................................................................................................................................................. 18
Touchpad............................................................................................................................................................................. 19
Power adapter................................................................................................................................................................... 20
Battery................................................................................................................................................................................. 20
Display...................................................................................................................................................................................21
Fingerprint reader..............................................................................................................................................................22
GPU—Integrated.............................................................................................................................................................. 23
Operating and storage environment.............................................................................................................................23
Chapter 4: Keyboard shortcuts.................................................................................................... 24
Chapter 5: Getting help and contacting Dell................................................................................ 26
Contents
Contents 3

Set up your Latitude 7420
The images in this document may differ from your computer depending on the configuration you ordered.
1. Connect the power adapter and press the power button.
NOTE: The battery may go into power-saving mode during shipment to conserve charge on the battery. Ensure that the
power adapter is connected to your computer when it is turned on for the first time.
2. Finish Windows setup.
Follow the on-screen instructions to complete the setup. When setting up, Dell recommends:
●Connect to a network for Windows updates.
NOTE: If connecting to a secured wireless network, enter the password for the wireless network access when
prompted.
●If connected to the internet, sign-in with or create a Microsoft account. If not connected to the internet, create an
offline account.
●On the Support and Protection screen, enter your contact details.
3. Locate and use Dell apps from the Windows Start menu—Recommended
Table 1. Locate Dell apps
Dell apps Details
Dell Product Registration
Register your computer with Dell.
Dell Help & Support
Access help and support for your computer.
1
4 Set up your Latitude 7420

Table 1. Locate Dell apps (continued)
Dell apps Details
SupportAssist
SupportAssist is the smart technology that keeps your
computer running at its best by optimizing settings,
detecting issues, removing viruses and notifies when you
need to make system updates. SupportAssist proactively
checks the health of your system's hardware and software.
When an issue is detected, the necessary system state
information is sent to Dell to begin troubleshooting.
SupportAssist is preinstalled on most of the Dell devices
running Windows operating system. For more information,
see SupportAssist for Business PCs User's Guide on
www.dell.com/serviceabilitytools.
Dell Update
Updates your computer with critical fixes and important
device drivers as they become available.
Dell Digital Delivery
Download software applications including software that is
purchased but not preinstalled on your computer.
Set up your Latitude 7420 5

Views of Latitude 7420
Right
1. microSD-card slot 2. micro-SIM card slot (optional with WWAN configuration
only)
3. Thunderbolt 4 port with DisplayPort Alt Mode/USB4/Power
Delivery
4. USB 3.2 Gen 1 port with PowerShare
5. HDMI 2.0 port 6. Wedge-shaped lock slot
Left
1. Thunderbolt 4 port with DisplayPort Alt Mode/USB4/Power
Delivery
2. Air vents
2
6 Views of Latitude 7420

3. Headset (headphone and microphone combo) port 4. Smart card reader slot (optional)
Top
1. Microphone array 2. Power button (with optional Fingerprint reader)
3. Keyboard 4. Touchpad
Views of Latitude 7420 7

Display
1. Proximity sensor (optional) 2. IR emitter (optional)
3. RGB or IR Camera (optional) 4. Camera shutter
5. Camera status LED 6. IR emitter (optional)
7. Ambient Light Sensor (ALS) (optional) 8. LCD panel
9. LED indicator
8 Views of Latitude 7420

Bottom
1. Speakers
2. Service tag label
3. Air vents
Modes
NOTE: The modes are applicable only to Latitude 7420 2-in-1 (an upsell option).
Views of Latitude 7420 9

Laptop mode
Tablet mode
10 Views of Latitude 7420

Stand mode
Tent mode
Views of Latitude 7420 11

Battery Charge and Status LED
Table 2. Battery Charge and Status LED Indicator
Power Source LED Behavior System Power State Battery Charge Level
AC Adapter Off S0 - S5 Fully Charged
AC Adapter Solid White S0 - S5 < Fully Charged
Battery Off S0 - S5 11-100%
Battery Solid Amber (590+/-3 nm) S0 - S5 < 10%
●S0 (ON) - System is turned on.
●S4 (Hibernate) - The system consumes the least power compared to all other sleep states. The system is almost at an OFF
state, expect for a trickle power. The context data is written to hard drive.
●S5 (OFF) - The system is in a shutdown state.
12 Views of Latitude 7420

Specifications of Latitude 7420
Dimensions and weight
The following table lists the height, width, depth, and weight of your Latitude 7420.
Table 3. Dimensions and weight
Description Values
Height:
Front height ●17.27 mm (0.68 in.) - Carbon Fiber
●16.90 mm (0.67 in.) - Aluminium
●17.06 mm (0.67 in.) - Carbon Fiber (2-in-1)
●16.40 mm (0.64 in.) - Aluminium (2-in-1)
Rear height ●18.88 mm (0.74 in.) - Carbon Fiber
●18.00 mm (0.708 in.) - Aluminium
●18.91 mm (0.74 in.) - Carbon Fiber (2-in-1)
●18.70 mm (0.736 in.) - Aluminium (2-in-1)
Width ●321.35 mm (12.65 in.) - Carbon Fiber
●321.35 mm (12.65 in.) - Aluminium
●321.35 mm (12.65 in.) - Carbon Fiber (2-in-1)
●321.35 mm (12.65 in.) - Aluminium (2-in-1)
Depth ●208.69 mm (8.22 in.) - Carbon Fiber
●208.69 mm (8.22 in.) - Aluminium
●208.69 mm (8.22 in.) - Carbon Fiber (2-in-1)
●208.69 mm (8.22 in.) - Aluminium (2-in-1)
Weight (minimum) ●1.22 kg (2.70 lb) - Carbon Fiber
●1.31 kg (2.89 lb) - Aluminium
●1.36 kg (3.00 lb) - Carbon Fiber (2-in-1)
●1.46 kg (3.23 lb) - Aluminium (2-in-1)
NOTE: The weight of your computer depends on the
configuration ordered and manufacturing variability.
Processor
The following table lists the details of the processors supported by your Latitude 7420.
Table 4. Processor
Description Option one Option two Option three Option four
Processor type 11th Generation Intel
Core i5-1135G7 Non-
vPro
11th Generation Intel
Core i5-1145G7 vPro
11th Generation Intel
Core i7-1165G7 Non-
vPro
11th Generation Intel Core
i7-1185G7 vPro
3
Specifications of Latitude 7420 13

Table 4. Processor (continued)
Description Option one Option two Option three Option four
Processor wattage ●Maximum TDP: 28
W
●cTDP: 13 W - 15 W
●Maximum TDP: 28
W
●cTDP: 13 W - 15 W
●Maximum TDP: 28
W
●cTDP: 13 W - 15 W
●Maximum TDP: 28 W
●cTDP: 13 W - 15 W
Processor core count 4 4 4 4
Processor thread
count
8 8 8 8
Processor speed 2.40 GHz to 4.20 GHz 2.60 GHz to 4.40 GHz 2.80 GHz to 4.70 GHz 3.00 GHz to 4.80 GHz
Processor cache 8 MB 8 MB 12 MB 12 MB
Integrated graphics Intel Iris XeGraphics Intel Iris XeGraphics Intel Iris XeGraphics Intel Iris XeGraphics
Chipset
The following table lists the details of the chipset supported by your Latitude 7420.
Table 5. Chipset
Description Values
Chipset Tiger Lake U PCH
Processor 11th Generation Intel Core i5/i7
DRAM bus width 64-bit
Flash EPROM 32 MB
PCIe bus Up to Gen4
Operating system
Your Latitude 7420 supports the following operating systems:
●Windows 10 Home, 64-bit
●Windows 10 Pro, 64-bit
●Ubuntu Linux 20.04, 64-bit - Laptop only
Memory
The following table lists the memory specifications of your Latitude 7420.
Table 6. Memory specifications
Description Values
Memory slots Integrated on the system board.
NOTE: You cannot upgrade the memory on your Latitude
7420
Memory type Dual-channel LPDDR4x
14 Specifications of Latitude 7420

Table 6. Memory specifications (continued)
Description Values
Memory speed 4267 MHz
Maximum memory configuration 32 GB
Minimum memory configuration 8 GB
Memory size per slot 8 GB, 16 GB, 32 GB
Memory configurations supported ●8 GB
●16 GB
●32 GB
External ports
The following table lists the external ports on your Latitude 7420.
Table 7. External ports
Description Values
USB ports ●One USB 3.2 Gen 1 port with PowerShare
●Two Thunderbolt 4 ports with DisplayPort Alt Mode/
USB4/Power Delivery
Audio port Universal audio jack
Video port/ports ●One HDMI 2.0 port
●Two Thunderbolt 4 ports with DisplayPort Alt Mode/
USB4/Power Delivery
Media-card reader One microSD-card slot
Power-adapter port USB Type-C port with Power Delivery
Security-cable slot One wedge-shaped lock slot
Internal slots
The following table lists the internal slots of your Latitude 7420.
Table 8. Internal slots
Description Values
M.2 One M.2 2230/2280 Keyed M slot for solid-state drive
NOTE: To learn more about the features of different
types of M.2 cards, see the knowledge base article Article
Number: 144170 at www.dell.com/support.
Specifications of Latitude 7420 15

Wireless module
The following table lists the Wireless Local Area Network (WLAN) module supported on your Latitude 7420.
Table 9. Wireless module specifications
Description Values
Model number Intel AX201
Transfer rate ●2.4 GHz 40M: Up to 574 Mbps
●5 GHz 80M: Up to 1.2 Gbps
●5 GHz 160M: Up to 2.4 Gbps
Frequency bands supported 2.4 GHz/5 GHz
Wireless standards ●WiFi 802.11a/b/g
●Wi-Fi 4 (WiFi 802.11n)
●Wi-Fi 5 (WiFi 802.11ac)
●Wi-Fi 6 (802.11ax)
Encryption ●64-bit and 128-bit WEP
●TKIP
●128-bit AES-CCMP
●256-bit AES-GCMP
Bluetooth Bluetooth 5.1
WWAN module
The following table lists the Wireless Wide Area Network (WWAN) module supported on your Latitude 7420.
WWAN module specifications
Description Option one Option two
Model number ●Qualcomm Snapdragon X20 Gigabit
LTE CAT 16 (DW5821e; e-SIM
enabled), WW excluding China,
Turkey, US
●Qualcomm Snapdragon X20 Gigabit
LTE CAT 16 (DW5821e) WW
●Qualcomm Snapdragon X20 Gigabit
LTE CAT 16 (DW5821e) for AT&T,
Verizon, and Sprint, US only
●Qualcomm Snapdragon X20 LTE-A
CAT 9 (DW5829e; e-SIM enabled)
WW excluding China, Turkey, US
●Qualcomm Snapdragon X20 LTE-A
CAT 9 (DW5829e) WW
●Qualcomm Snapdragon X20 LTE-
A CAT 9 (DW5829e) for AT&T,
Verizon, and Sprint, US only
Transfer rate up to 1 Gbps DL/150 Mbps UL (Cat 16) up to 450 Mbps DL/75 Mbps UL (Cat 9)
Frequency bands supported ●1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19,
20, 25, 26, 28, 29, 30, 32, 38, 39, 40,
41, 42, 43, 46, 66
●HSPA+ (1, 2, 4, 5, 6, 8, 9, 19)
●1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19,
20, 25, 26, 28, 29, 30, 32, 38, 39, 40,
41, 66
●HSPA+ (1, 2, 4, 5, 6, 8)
Network standards ●LTE FDD/TDD
●WCDMA/HSPA+
●GPS/GLONASS/Beidou/Galileo
●LTE FDD/TDD
●WCDMA/HSPA+
●GPS/GLONASS/Beidou/Galileo
16 Specifications of Latitude 7420

Description Option one Option two
Antenna connector ●WWAN Main Antenna X 1
●WWAN Diversity Antenna X 1
●4 x 4 MIMO Antenna x 2
●WWAN Main Antenna X 1
●WWAN Diversity Antenna X 1
Temperature ●Normal operating temperature:
-30°C to + 70°C
●Extended Operating temperature:
-40°C to +85°C
●Normal operating temperature:
-30°C to + 70°C
●Extended Operating temperature:
-40°C to +85°C
Audio
The following table lists the audio specifications of your Latitude 7420.
Table 10. Audio specifications
Description Values
Audio controller Realtek ALC3281-CG
Stereo conversion Supported
Internal audio interface High-definition audio
External audio interface Universal audio jack
Number of speakers Two
Internal-speaker amplifier Supported (audio codec integrated)
External volume controls Keyboard shortcut controls
Speaker output:
Average speaker output 2 W
Peak speaker output 2.5 W
Subwoofer output Not supported
Microphone Dual-array microphones
Storage
Your computer supports the following configuration: The primary drive of your computer varies with the storage configuration.
●M.2 2230, PCIe x4 NVMe, Class 35 solid-state drive
●M.2 2280, PCIe x4 NVMe, Class 40 solid-state drive
●M.2 2280, PCIe x4 NVMe, Class 40 Self encrypting solid-state drive
Table 11. Storage specifications
Form factor Interface type Capacity
M.2 2230, Class 35 solid-state drive Gen 3 PCIe x4 NVMe Up to 512 GB
M.2 2280, Class 40 solid-state drive Gen 3 PCIe x4 NVMe Up to 1 TB
M.2 2280, Class 40 Self encrypting solid-state drive Gen 3 PCIe x4 NVMe Up to 512 GB
Specifications of Latitude 7420 17

Media-card reader
The following table lists the media cards supported by your Latitude 7420.
Table 12. Media-card reader specifications
Description Values
Media-card type One micro-SD card slot
Media-cards supported ●Micro Secure Digital (mSD)
●Micro Secure Digital High Capacity (mSDHC)
●Micro Secure Digital Extended Capacity (mSDXC)
NOTE: The maximum capacity supported by the media-card reader varies depending on the standard of the media card
installed in your computer.
Keyboard
The following table lists the keyboard specifications of your Latitude 7420.
Table 13. Keyboard specifications
Description Values
Keyboard type ●Standard non-backlit keyboard
●Standard backlit keyboard
Keyboard layout QWERTY/KANJI
Number of keys ●United States and Canada: 79 keys
●United Kingdom: 80 keys
●Japan: 83 keys
Keyboard size X=19.05 mm key pitch
Y=18.05 mm key pitch
Keyboard shortcuts Some keys on your keyboard have two symbols on them.
These keys can be used to type alternate characters or to
perform secondary functions. To type the alternate character,
press Shift and the desired key. To perform secondary
functions, press Fn and the desired key.
NOTE: You can define the primary behavior of the
function keys (F1–F12) changing Function Key Behavior
in BIOS setup program.
Camera
The following table lists the camera specifications of your Latitude 7420.
Table 14. Camera specifications
Description Option 1 Option 2 Option 3 Option 4 Option 5
Number of cameras One One One One One
18 Specifications of Latitude 7420

Table 14. Camera specifications (continued)
Description Option 1 Option 2 Option 3 Option 4 Option 5
Type Integrated 2.7 mm
HD RGB Webcam
Integrated 2.7
mm HD RGB/IR
Webcam with
Proximity Sensor
and optional ALS
Integrated 6 mm
HD RGB Webcam
Integrated 6
mm HD RGB/IR
Webcam with
Proximity Sensor
and optional ALS
Integrated 6 mm
FHD RGB/IR
Webcam with
Proximity Sensor
and optional ALS
Location Front Front Front Front Front
Sensor type CMOS sensor
technology
CMOS sensor
technology
CMOS sensor
technology
CMOS sensor
technology
CMOS sensor
technology
Resolution (RGB):
Still Image 0.92 0.92 0.92 0.92 2
Video 1280 x 720 at 30
fps
1280 x 720 at 30
fps
1280 x 720 at 30
fps
1280 x 720 at 30
fps
1920 x 1080 at 30
fps
Diagonal viewing
angle
74.9° 75.8° 78.6° 87° 87.6°
Resolution (IR):
Still Image NA 0.23 NA 0.23 0.23
Video NA 640 x 360 at 15 fps NA 640 x 360 at 15 fps 640 x 360 at 15 fps
Diagonal viewing
angle
NA 75.8° NA 87° 87.6°
Touchpad
The following table lists the touchpad specifications of your Latitude 7420.
Table 15. Touchpad specifications
Description Option 1 Option 2
Touchpad resolution:
Horizontal 3339 1337
Vertical 1994 761
Touchpad dimensions:
Horizontal 115 mm (4.52 in.) 115 mm (4.52 in.)
Vertical 65 mm (2.56 in.) 65 mm (2.56 in.)
Touchpad gestures For more information about touchpad
gestures available on Windows 10, see the
Microsoft knowledge base article 4027871 at
support.microsoft.com.
For more information about
touchpad gestures available on
Windows 10, see the Microsoft
knowledge base article 4027871
at support.microsoft.com.
Specifications of Latitude 7420 19

Power adapter
The following table lists the power adapter specifications of your Latitude 7420.
Table 16. Power adapter specifications
Description Option one Option two
Type 65 W AC adapter, USB-C 90 W AC adapter, USB-C
Input voltage 100 VAC–240 VAC 100 VAC–240 VAC
Input frequency 50 Hz–60 Hz 50 Hz–60 Hz
Input current (maximum) 1.70 A 1.50 A
Output current (continuous) ●5 V/3 A (Continuous)
●9 V/3 A (Continuous)
●15 V/3 A (Continuous)
●20 V/3.25 A (Continuous)
●5 V/3 A (Continuous)
●9 V/3 A (Continuous)
●15 V/3 A (Continuous)
●20 V/4.5 A (Continuous)
Rated output voltage ●5 VDC
●9 VDC
●15 VDC
●20 VDC
●5 VDC
●9 VDC
●15 VDC
●20 VDC
Temperature range:
Operating 0°C to 40°C (32°F to 104°F) 0°C to 40°C (32°F to 104°F)
Storage -40°C to 70°C (-40°F to 158°F) -40°C to 70°C (-40°F to 158°F)
Dimensions
Width (mm/inch) 112 mm (4.41 in.) 130 mm (5.1 in.)
Depth (mm/inch) 51 mm (2.01 in.) 66 mm (2.6 in.)
Height (mm/inch) 28 mm (1.1 in.) 22 mm (0.8 in.)
Weight (kg/lb) 201 g (0.44 lb) 291 g (0.64 lb)
Battery
The following table lists the battery specifications of your Latitude 7420.
Table 17. Battery specifications
Description Option one Option two
Battery type 3-cell, 42 WHr, optional with
ExpressCharge or Long Life Cycle
4-cell, 63 WHr, optional with
ExpressCharge or Long Life Cycle
Battery voltage 11.40 VDC 15.2 VDC
Battery weight (maximum) 0.21 kg (0.467 lb) 0.26 kg (0.58 lb)
Battery dimensions:
Height 5.7 mm (0.224 in.) 5.7 mm (0.224 in.)
Width 92.8 mm (3.654 in.) 92.8 mm (3.654 in.)
20 Specifications of Latitude 7420